Lune Exacte in-house movement
| Calibre | Lune Exacte |
| Case | Stainless steel, 41.00 x 37.30 mm (43.40 x 47.20 mm including the crown and lugs) |
| Plates and bridge | Edges bevelled and polished by hand, decorated movement |
| Impulse | Double mainspring barrel, energy regulated by a patented remontoir d’égalité |
| Frequency | 3 Hz / 21‘600 A/h |
| Frequency | 3 Hz / 21‘600 A/h |
| Parts | 187 |
| Jewels | 25 |
| Size | 32.0 x 30.0 mm, height 5.9 mm |
| Power reserve | 78 h, limited by a differential stop works |